16522421616 has 60 divisors (see below), whose sum is σ = 46603977472. Its totient is φ = 5464101888.

The previous prime is 16522421599. The next prime is 16522421621. The reversal of 16522421616 is 61612422561.

16522421616 is a `hidden beast` number, since 16 + 5 + 2 + 2 + 4 + 21 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 433441 + ... + 470016.

Almost surely, 2^16522421616 is an apocalyptic number.

16522421616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16522421616 is an abundant number, since it is smaller than the sum of its proper divisors (30081555856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16522421616 is a wasteful number, since it uses less digits than its factorization.

16522421616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903598 (or 903589 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The spelling of 16522421616 in words is "sixteen billion, five hundred twenty-two million, four hundred twenty-one thousand, six hundred sixteen".